Analysis of Energy Efficiency of Solar EEnergy/Air Source Compound Heat Pump System under Heating Condition

摘要

Based on the test data analysis and processing which are acquired from a solar energy/air source compound heat pump system in the actual building, the seasonal energy efficiency ratio under the two modes and the energy-saving rate are obtained. Through the analysis of the energy-saving rate, the energy-saving characteristics of the solar energy/air source compound heat pump system under heating condition is discussed in detailed. Application of air source heat pump of traditional single heat source is constrained by the climatic conditions. In winter, the heat pump system is easy to frost due to the decrease of evaporation temperature changing as the outdoor temperature, which may cause a series of adverse consequences, such as reduction of heating capacity of the system, declination of COP, and even the system can not start normally. Solar Energy heat pump using single heat source is directly affected by solar radiation and rainy days so that it can only operate intermittently or need some auxiliary heat source. Therefore, a new type heat pump system, or solar /air source heat pump system that is compose by the combination of these two forms of heat pump is developed and used widely in building cooling, heating and the supply of hot water for daily life with minimum conventional energy consumption.